From 3 to 4 stars on slicethepie.com
7 Feb 09
It's all to do with your accuracy rating. i often flucuate between 2 and three stars because when my accuracy falls below 85% i loose a star. It's all about trying to build it up. STP try to encourage you to use the whole 1-10 ratings system but i've found this to be a hinderance as it can loose you a good chunk of accuracy.
18 Nov 10
The stars are awarded based on many factors. One of the main factors is Accuracy - i.e how well your star rating matches with the rating of other higher ranked scouts . Another factor is what they call as SPREAD i.e if you keep continuosly rating between 4-7 , your star will decrease . To achieve higher stars you have to rate using all numbers from 0-10 . Keep this in mind and rate carefully . Happy Earnings :)